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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-35A0027 Original Issue: December 15, 2011 ATA System: 3511 SUBJECT: OXYGEN - Crew Oxygen System - Low Pressure Oxygen Hose Replacement Export of this technology is controlled under the United States Export Administration Regulations (EAR) (15 CFR 730-774). An export license may be required before it is used for development, production or use by foreign persons from specific countries. The controller of this data has the individual responsibility to abide by all export laws.
9E991ECCN:
BOEING PROPRIETARY, CONFIDENTIAL, AND/OR TRADE SECRET Copyright © 2011 The Boeing Company Unpublished Work - All Rights Reserved Boeing claims copyright in each page of this document only to the extent that the page contains copyrightable subject matter. Boeing also claims copyright in this document as a compilation and/or collective work.
This document includes proprietary information owned by The Boeing Company and/or one or more third parties.
Treatment of the document and the information it contains is governed by contract with Boeing. For more information, contact The Boeing Company, P.O. Box 3707, Seattle, Washington 98124.
Boeing, the Boeing signature, the Boeing symbol, 707, 717, 727, 737, 747, 757, 767, 777, 787, Dreamliner, BBJ, DC-8, DC-9, DC-10, KC-10, KDC-10, MD-10, MD-11, MD-80, MD-88, MD-90, P-8A, Poseidon and the Boeing livery are all trademarks owned by The Boeing Company; and no trademark license is granted in connection with this document unless provided in writing by Boeing.
BOEING PROPRIETARY - Copyright © Unpublished Work - See page 1 for details.
Original Issue: December 15, 2011 777-35A0027 1 of 46
3.0
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Table of Contents
Summary5
1. PLANNING INFORMATION9
A. Effectivity9
1. Airplanes9
2. Spares Affected ........................................ 1 3 B. Concurrent Requirements ...................................... 1 4 C. Reason ................................................ 1 4 D. Description .............................................. 1 4 E. Compliance .............................................. 1 4 F. Approval ............................................... 1 5 G. Manpower .............................................. 1 5 H. Weight and Balance Changes .................................... 1 5 I. Electrical Load Data ......................................... 1 6 J. References .............................................. 1 6
1. Existing Data .......................................... 1 6
2. Data supplied with this Service Bulletin ............................ 1 6
3. Installation Drawings Used in the Preparation of this Service Bulletin ............ 1 6 K. Publications Affected ........................................ 1 7 L. Interchangeability and Intermixability of Parts ........................... 1 7
2. MATERIAL INFORMATION ........................................ 1 9 A. Material - Price and Availability ................................... 1 9 B. Industry Support Information .................................... 1 9 C. Parts Necessary For Each Airplane ................................. 2 0
1. Kits/Parts ............................................ 2 0
2. Parts and Materials Supplied by the Operator ........................ 2 0
3. Parts Modified and Reidentified ................................ 2 1
4. Parts Removed and Not Replaced .............................. 2 1 D. Parts Necessary to Change Spares ................................. 2 1 E. Special Tooling - Price and Availability ............................... 2 1 F. Special Tooling Necessary to do this Service Bulletin ....................... 2 1
3. ACCOMPLISHMENT INSTRUCTIONS .................................. 2 3 A. GENERAL INFORMATION ..................................... 2 3 B. WORK INSTRUCTIONS ....................................... 2 4 FIGURE 1: LOW PRESSURE OXYGEN HOSE SLEEVE AND TAPE INSTALLATION ......... 2 5 FIGURE 2: FIRST OFFICER SIDE CONSOLE LOW PRESSURE OXYGEN HOSE REPLACEMENTS . 28 FIGURE 3: CAPTAIN OXYGEN STOWAGE BOX LOW PRESSURE OXYGEN HOSE REPLACEMENT .................................................. 3 2 FIGURE 4: FIRST OFFICER STOWAGE CLOSET LOW PRESSURE OXYGEN HOSE REPLACEMENT .................................................. 3 5 FIGURE 5: OBSERVERS CONSOLE LOW PRESSURE OXYGEN HOSE REPLACEMENT ..... 3 8 FIGURE 6: FLIGHT DECK INTERIOR RESTORATION ......................... 4 1 APPENDIX A: OXYGEN HOSE TO STOWAGE BOX INSTALLATION ................... 4 6
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Commercial Airplanes 777 Service Bulletin ALERT SummaryNumber: 777-35A0027Original Issue: December 15, 2011 ATA System: 3511 SUBJECT: OXYGEN - Crew Oxygen System - Low Pressure Oxygen Hose Replacement
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
CONCURRENT REQUIREMENTS None.
BACKGROUND The changes provided in this service bulletin will help prevent damage to the low pressure oxygen hoses that may be subjected to electrical current. An electrical current condition in the low pressure oxygen hose can cause the low pressure oxygen hose to melt or burn. This could result in smoke and/or fire in the flight compartment.
An operator reported that a fire originated near the first officer's area which caused extensive damage to the flight deck. One scenario of the causes being considered is that an electrical fault or short circuit resulted in electrical heating of the low pressure oxygen hoses in the flight crew oxygen system.
This service bulletin will replace low pressure oxygen hoses with non-conductive low pressure oxygen hoses located on the flight deck. The replacement of the low pressure oxygen hoses will prevent electrical current from passing through the low pressure oxygen hose internal anti-collapse spring which can cause the low pressure oxygen hose to melt or burn.
Boeing Service Related Problem (SRP) 777-SRP-35-0047 is related to this service bulletin.
Boeing Fleet Team Digest (FTD) 777 FTD 35-11003 is related to this service bulletin.
This table is provided to operators for planning purposes only. Refer to the applicable sections for more information.
ReferenceAffectedPlanning Data Paragraph 1.A.2., Spares AffectedYesSpares Affected Paragraph 1.E., ComplianceYesAD Related Paragraph 1.H., Weight and Balance ChangesYesWeight and Balance Change Paragraph 1.I., Electrical Load DataNoElectrical Load Changed
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Original Issue: December 15, 2011 777-35A0027 5 of 46
ReferenceAffectedPlanning Data Paragraph 1.K., Publications AffectedYesPublications Affected Paragraph 1.K., Publications AffectedNoAirplane Flight Operations Affected (Flight Crew Operations Manual and/or FAA Approved Airplane Flight Manual) Paragraph 2.C.1., Kits/PartsYesKits/Parts Required Paragraph 2.C.2., Parts and Materials Supplied by the Operator YesOperator Supplied Material Paragraph 2.F., Special Tooling Necessary to do this Service Bulletin NoSpecial Tooling Required ACTION (PRR 62359) Remove the stowage boxes for the oxygen masks. Remove the First Officer forward console and side console.
Replace the existing low pressure oxygen hoses with the new non-conductive low pressure oxygen hoses.
Perform a leak test.
EFFECTIVITY All 777-200, -200LR, -300, -300ER, 777F, Airplanes. Refer to Paragraph 1.A.1., Airplanes, for the list of affected airplanes.
COMPLIANCE The Federal Aviation Administration (FAA) will possibly release an Airworthiness Directive related to this service bulletin. The Airworthiness Directive will make the compliance tasks and times given in this service bulletin mandatory.
Boeing recommends that the change given in this service bulletin be done within 18 months after the original issue date of this service bulletin.
INDUSTRY SUPPORT INFORMATION At the time of release of this service bulletin, warranty remedies have not been determined. A subsequent revision or Information Notice will address the warranty remedies available, if any.
MANPOWER Elapsed HoursTotal Task HoursAirplanes
11.2517.75TOTAL FOR
EACH AIR- PLANE
MATERIAL INFORMATION Boeing Supplied Kits/Parts.
Refer to Paragraph 2.A., Material - Price and Availability.
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REMOVE THE FIRST OFFICER
FORWARD CONSOLE AND SIDE CONSOLE TOP. REPLACE THE LOW PRESSURE OXYGEN HOSE.
PERFORM A LEAK TEST.
REMOVE THE STOWAGE BOXES FOR THE OXYGEN MASKS. REPLACE THE LOW PRESSURE OXYGEN HOSES. PERFORM A
LEAK TEST FWD 2121436 Original Issue: December 15, 2011 777-35A0027
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Commercial Airplanes 777 Service Bulletin ALERT Number: 777-35A0027 Original Issue: December 15, 2011 ATA System: 3511 SUBJECT: OXYGEN - Crew Oxygen System - Low Pressure Oxygen Hose Replacement
THIS BULLETIN IS SENT TO THE OPERATORS OF RECORD OF THE AIRPLANES SHOWN IN PARAGRAPH
1.A., EFFECTIVITY. IF AN AIRPLANE HAS BEEN LEASED OR SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OPERATOR. IF APPLICABLE SPARES HAVE BEEN SOLD, SEND THIS SERVICE BULLETIN TO THE NEW OWNER.
1. PLANNING INFORMATION A. Effectivity
1. Airplanes Refer to Service Bulletin Index Document D624T001 Part 3 for Airplane Variable Number, LineNumber, and Serial Number data.
This service bulletin is for the airplane(s) shown below. An equivalent change is on subsequent production airplanes. Refer to PRR 62359 for data about this change.
DESCRIPTIONCONFIGURATIONGROUP All 777 airplanes before L/N 976.-1 Airplane Models:
777-200, 777-200LR, 777-300, 777-300ER, 777F GroupVariable Number 1WA001 - WA017 1WA076 - WA080 1WA086 - WA093 1WA101 - WA104 1WA116 - WA119 1WA131 - WA137 1WA171 - WA175
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GroupVariable Number 1WA196 - WA198 1WA206 - WA212 1WA221 - WA223 1WA231 - WA232 1WA241 - WA250 1WA261 - WA266 1WA281 - WA283 1WA301 - WA304 1WB001 - WB021 1WB031 - WB046 1WB051 - WB088 1WB101 - WB106 1WB121 - WB125 1WB131 - WB148 1WB151 - WB155 1WB161 - WB177 1WB181 - WB194 1WB201 - WB215 1WB231 - WB247 1WB271 - WB273 1WB276 - WB286 1WB291 - WB302 1WB306 - WB307 1WB311 - WB337 1WB341 - WB342 1WB366 - WB368 1WB371 - WB388 1WB406 1WB411 - WB413 1WB416 - WB439 1WB446 - WB453 1WB476 1WB481 - WB484
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GroupVariable Number 1WB501 - WB512 1WB531 - WB537 1WB551 - WB554 1WB591 - WB597 1WB601 - WB606 1WB611 - WB622 1WB631 - WB638 1WB646 - WB649 1WC051 - WC073 1WC101 - WC104 1WC111 - WC120 1WC221 - WC224 1WC241 - WC243 1WC281 - WC290 1WC301 - WC308 1WC361 - WC364 1WC371 - WC374 1WC381 - WC395 1WC441 1WC446 - WC449 1WC456 - WC459 1WC486 - WC493 1WC506 - WC508 1WC521 - WC522 1WC531 - WC536 1WC546 - WC548 1WC556 1WC566 - WC567 1WC571 - WC574 1WC581 1WD001 - WD002 1WD011 - WD018 1WD031 - WD036
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GroupVariable Number 1WD046 - WD055 1WD066 - WD075 1WD081 - WD089 1WD091 1WD096 1WD101 - WD105 1WD111 1WD116 1WD501 - WD513 1WD521 - WD541 1WD546 - WD554 1WD561 - WD573 1WD581 - WD599 1WD606 - WD609 1WD621 - WD632 1WD651 - WD665 1WD671 - WD677 1WD691 - WD709 1WD741 - WD752 1WD761 - WD771 1WD786 - WD788 1WD796 - WD819 1WD826 - WD837 1WD846 - WD867 1WD871 - WD886 1WD911 - WD915 1WD921 - WD922 1WD936 - WD939 1WD946 - WD954 1WD966 - WD970 1WD981 - WD982 1WD986 - WD987 1WD996
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